"As we age, and become closer and more comfortable with one another, it could be that we are more able to express ourselves to each other. In other words, its possible that negativity is a normal aspect of close relationships that include a great deal of daily contact," said Kira Birditt, a research fellow at the University of Michigan Institute for Social Research.
The stress experienced by partners, and not the individual's stress, was associated with increased waist circumference, a new study has revealed.
Husbands with stressed wives are more likely to have increased blood pressure, a new study suggests.